Control system for variable displacement pumps
US4008004A · kind A · utility
4Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1975 |
| Grant date | Feb 15, 1977 |
| Priority date | — |
| Expiry date | Dec 22, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B49/002
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a hydraulic system having a plurality of variable displacement pumps driven by a prime mover, each pump has a variable ratio input device connected to a load sensing means. Each variable ratio input device automatically reduces the displacement of its respective pump by the same proportion when the prime mover is overloaded irrespective of the displacement setting of the pump and automatically increases the displacement of its pump by the same proportion up to the set displacement when the prime mover is not overloaded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.